摘要
通过问卷调查确定了江苏省农业残留物在不同时间阶段(1990～1995、1996～2000、2001～2005和2006～2008年)作为生活燃料和田间直接燃烧的比例,利用燃烧炉模拟秸秆燃烧试验确定了6种农业残留物(水稻、小麦、玉米、油菜、棉花和大豆)燃烧产生的CO2、CO、CH4和N2O的排放因子;基于此,结合江苏省不同时间阶段的粮食产量、草谷比编制了该省不同时期秸秆燃烧温室气体排放清单.结果表明,不同农业残留物燃烧时的CO2、CO、CH4和N2O排放因子不同,其中油菜秸秆具有较高的CO2和CH4排放因子,玉米秸秆具有较高的N2O排放因子,而水稻秸秆的CO排放因子较高.江苏省农业残留物燃烧温室气体排放清单显示,水稻、小麦、玉米、油菜、棉花和大豆6种供试作物秸秆温室气体的年均全球增温潜势(global warmingpotential,GWP)分别为9.18、4.35、2.55、1.63、0.55和0.39 Tg CO2当量.1990～1995年期间和2006～2008年期间农业残留物燃烧温室气体年均GWP变化不大.4个阶段中1996～2000年期间秸秆燃烧温室气体GWP最大,年均高达23.83 Tg CO2当量,而2001～2005年期间的年均GWP最低,为20.30 Tg CO2当量.
Burning of agricultural crop residues was a major source greenhouse gases.In this study,the proportion of crop straws（rice,wheat,maize,oil rape,cotton and soja） in Jiangsu used as household fuel and direct open burning in different periods（1990-1995,1996-2000,2001-2005 and 2006-2008） was estimated through questionnaire.The emission factors of CO2,CO,CH4 and N2 O from the above six types of crop straws were calculated by the simulated burning experiment.Thus the emission inventory of greenhouse gases from crop straws burning was established according to above the burning percentages and emission factors,ratios of dry residues to production and crop productions of different periods in Jiangsu province.Results indicated that emission factors of CO2,CO,CH4 and N2 O depended on crop straw type.The emission factors of CO2 and CH4 were higher for oil rape straw than the other straws,while the maize and the rice straw had the higher N2 O and CO emission factor.Emission inventory of greenhouse gases from agricultural residues burning in Jiangsu province showed,the annual average global warming potential（GWP） of six tested crop straws were estimated to be 9.18（rice straw）,4.35（wheat straw）,2.55（maize straw）,1.63（oil rape straw）,0.55（cotton straw） and 0.39（soja straw） Tg CO2 equivalent,respectively.Among the four study periods,the annual average GWP had no obvious difference between the 1990-1995 and 2006-2008 periods,while the maximal annual average GWP（23.83 Tg CO2 equivalent） happened in the 1996-2000 period,and the minimum（20.30 Tg CO2 equivalent） in 1996-2000 period.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2011年第5期1242-1248,共7页
Environmental Science
基金
国家自然科学基金项目(40975091)
关键词
农业残留物
温室气体
作物秸秆燃烧
排放因子
排放清单
agriculture residues
greenhouse gases
crop straw burning
emission factor
emission inventory
